1.我們在專案的根目錄可以找到composer.json這個檔案，加上下邊的程式碼

    "require": {
        "php": ">=5.5.9",
        "laravel/framework": "5.2.*",
        "gregwar/captcha": "1.*"
    },

2.進入專案根目錄進行composer update 

3.設定路由

// 驗證碼的路由
Route::get('captcha','Index\[email protected]');

4.輸出驗證碼

/*
author:咔咔
address:陝西西安
wechat:fangkangfk
*/

// 驗證碼
    public function code()
    {
        $builder = new CaptchaBuilder();

        $builder->build(150,32);

        $phrase = $builder->getPhrase();

        //把內容存入session

        Session::flash('milkcaptcha', $phrase); //儲存驗證碼

        ob_clean();

        return response($builder->output())->header('Content-type','image/jpeg');
    }
 

5.在頁面輸出驗證碼

<img src="{{url('captcha')}}" style="width: 130px;height: 60px;margin-left: 410px;position: relative;top: -74px;" onclick="this.src=this.src+'?'+Math.random()" class="code" >

6.點選驗證碼進行重新整理，就是onclick事件